OK so here is the deal. I'm making a kick @55 modification to my remote controlled truck. I need an electric actuator that can push or pull up to 10 pounds but anything would be nice because I can't find one small enough for my application.

Desired specs:
stroke of half inch to 1 inch
Totally size of actuator would be about two to three inches
Speed: faster than lighting.
runs off of electricity.
I'll be controlling this off of a microcontroller.

Is there such a thing out there. Thank you.